The big seal script of character Smile are
The far left one has a mouth on the left, and a bent person on the right, which means that the person is laughing (with mouth) and twisting his body because too funny. The middle one has twisted eyebrow and twisted body shape because laughing. The right one has the twisted eyebrow on the top, and smile face on the bottom.
There is another big seal script
The top is like Bamboo - Head Radical, Dictionary of Pictography thinks that it is wrongly written for twisted eyebrow, some readers think that it is a bamboo musical instrument which makes people laugh. the bottom is character 夭, which means a person dancing with happily.
The small seal script of the character is
The clerical script of the character is
The top Bamboo-Head Radical looks like smile eyebrow with eyes, the bottom is character 夭.
The song typeface of the character is
Same as clerical script.
Its Pinyin is Xiao4.